22434840 has 64 divisors (see below), whose sum is σ = 74786400. Its totient is φ = 5982336.

The previous prime is 22434833. The next prime is 22434857. The reversal of 22434840 is 4843422.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9307 + ... + 11466.

Almost surely, 2^22434840 is an apocalyptic number.

22434840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22434840 is an abundant number, since it is smaller than the sum of its proper divisors (52351560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22434840 is a wasteful number, since it uses less digits than its factorization.

22434840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20793 (or 20783 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 22434840 is about 4736.5430431909. The cubic root of 22434840 is about 282.0380211297.

The spelling of 22434840 in words is "twenty-two million, four hundred thirty-four thousand, eight hundred forty".